Trolley-stand.



M. A. YEAKLEY.

TROLLEY STAND. APPLICATION FILED Nov. 3. 1908.

Patented Jul 11, 1916.

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M. A. YEAKLEY. TROLLEY STAND. APPLI CATION FILED NOV- 3. 1908.

Patented July 11, 1916.

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TROLLEY STAND.

APPLICATION FILED NOV. 3. 1908.

1 1 9 1 ,O5% Patented July 11, 1916.

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rmmm MELVIN A. YEAKLEY, OF CANTON", OHIO, ASSIGNOR TO JOHN E. MCLAIN, OFCANTON,

. OHIO.

TBOLLEY-STAND.

Specification'oflLetters Patent. Pate t d J l 11 191 Application filedNovember 3, 1908. Serial No. 460,919.

of Ohio, have invented certain new and use-- ful Improvements inTrolley-Stands, of which the followingis a specification, referencebeing bad therein to the accompanying drawings.

This invention relatesto a on a vehicle.

One object of the invention is to provide means for reducing thefriction between the I trolley pole and its supporting means to aAnother object of the invention is to provide novel means for reducingthe friction between the elements of a trolley stand to minimum,including that'betw'een the pole carrier and the base.

Another ob ect of the invention is to provi de combined compressionmeans operating precisely slmilarly forelevatmg the pole 7 against thetrolley wire and for butting the closely as possible to the roof or topof the Y car.

Another object of the'invention is to pro vide a trolley stand withincased operating springs.

Further objects of the invention will be obvious from the description ofthe combination or combinations of parts hereinafter made.

Referring to the drawings: Figure 1 is a side elevation of a trolleystand, embodying my invention, parts being broken away, and illustratingthe pole in vertical position. Fig. 2 is a top plan view of the stand.Fig.

3 is a transverse section on the line.3-..3 of- Fig. 2.

Fig. 4.- is a sectional view on line trolley stand adapted to pivotallysupport a trolley pole 1 4L of Fig. 1. Fig. 5 is a transverse sectionalv1ew taken behind the casingand looking toward the pole carrier. Fig. 6is a fragmentary side view, enlarged, parts being shown' in section andbroken away.

Figs. 7 and 8 are detail views.

In the drawings, 1 indicates a base which maybe suitably secured to thetop or roof of a trolley car.

. 2 indicates a trolley pole carrier for supporting a trolley pole 2*.It is bifurcated at its lower end to form legs 2, 2, as shown.

Thep 1votal supporting'means for the carr er whlch permit it to swing inhorizontal directions may be o-fany preferred construction. Asillustrating-one form of such means, I have shown a vertical stud 3secured to the base 1 and a casing 4-, preferably of inverted cup shape,adapted to set over and swlng about the stud. Mounted between the stud 3and casing 4 are sets of annular anti-friction bearings 5, 6, preferablyarranged near opposite ends of the stud3. I l

7 indicates a sleeve surrounding the stud 3, and arranged to space theannular bearlngs 5, 6. A bolt 8 screws into the casing 4L and enters anaperture or slot 7 in the sleeve, to lock the casing 4 and the sleevetogether.

9 indicates a nut engaging the outer end of the stud 3 for adjusting andholding the bearings 5, 6, and sleeve 7 in proper relation toeach'other. 1

10 indicates a rod or arm fixed to or formed integral with the casing-1.

11 indicates a cross head, preferably of T- shape, carried by andslidablysupported upon the free end of said rod, and having at 1tsopposite ends heads 11, 11, that are formed with spring abutmentsurfaces 11", 11".

12, 12, indicate a pair of spring-inclosing cylinders arranged onopposite sides of and longitudinally of the rod 10.

13, 13, indicate combined elevating and butiing springs, each arrangedwithin a cylinder and engaging at one end with an abutment plate lwhichis preferably detachably mounted thereon and at its opposite end withthe adjacent abutment surface 11. The outer end of each cylinder is openand partially incloses one of the abutment heads on the. cross head 11.

11 indicates a bolt adapted to adjustably 110 connect the head 11 withthe rod 10. The shank of the bolt 11 has a screw-threaded connectionwith the rear end of the rod 10 and when rotated in one direction or theother operates to adjust the tension of, the springs 13.

The pivotal supporting means between the horizontally rotatable casing4; and the trolley carrier 2 to permit the latter to swing in verticaldirections comprise substantially anti-friction bearing or contactelements, preferably a series of knife edge contact devices.

15, 15, indicate a pair of bearing supports arranged on the casing 41 atopposite sides of the rod 10, and preferably formed integral with thecasing. Eachof the supports 15 is recessed to receive a bearing block 16having two horizontally arranged grooves 16, 16'.

17 indicates a cross rod or pinfiXedto the legs 2, 2 of the trolley polecarrier and extending through an opening 17 formed in the strut rod 10.One surface of the rod 17 is formed with two knife edges 17', 17",adapted to enter and engage the walls of the grooves 16, 16',respectively, of the blocks 16.

18, 18, indicate a pair of thrust members, each carried by one of thecylinders 12. Each of the said members is formed with two recesses toreceive bearing blocks 19, 19, one of the blocks being arranged aboveand the other below the axis of the thrust member. Each of these blocksis formed with a groove, the groove in the upper block being designated19 and the groove in the lower block being designated 19*, and eachextending crosswise in a horizontal direction.

20, 20, indicate the knife edge contacts ar ranged to cooperate with thegrooves 19 19 respectively, of the blocks 19, 19, in each leg 2 of thepole carrier.

In Fig. l I have shown the trolleypole supported vertically by thesprings 13, cooperating through all of the knife edge bearings.

Referring to Fig. 6, it will be seen that the trolley pole is inclinedfrom the vertical and in the position it occupies when pressing thetrolley wheel into engagement with the trolley wire. In. this positionof the pole, the contacts 16", 17", and contacts 2O, 19- are incooperation, the latter contacts acting through the thrust members 18,18, and cylinders 12 to compress springs13.

If the pole leaves the trolley wire, the springs 13 will force its freeend violently upward past the vertical position when the pole is in thislatter position, it will be understood that the contacts 16, 17, and thecontacts 20 and 19 respectively, have come into engagement, and that thelatter contacts act through the thrust members 18, 18, and cylinders 12,to compress the springs 13. By this construction, one set of contactdevices operates to support the pole carrier 2 and to compress thesprings 13 when the free end of the pole is at one side of the centralvertical transverse plane of the trolley stand, and another set ofcontact devices operates to support the pole carrier and to compress thesprings when the free end of the pole is on the opposite side of thesaid vertical plane.

It will be noted that the compression of the springs is always effectedby the move ment of the same end of each spring toward the other endthereof, irrespective of which sets of bearing devices is in operation.It will also be obvious from the construction just described, that thepole may be drawn down toward either end of the car without swinging thecasing 41 and the elevating springs 13 about the axis of theconnectionwhich permits the movement of the pole in horizontal directions, as islargely customary at the present time.

As the contact devices 20, 20, engage their cooperating surfaces on thethrust members 18, 18, carried by the cylinders 12 at points which areon opposite sides of the axis of said thrust members in order to permita telescoping of the spring-containing cylinders 12 relative to theabutments 11 without frictional resistance to the movements of thecylinders, I provide novel means for pivotingand slidably connecting thecylinders to the latter. These means preferably comprise two elongatedgrooves 21 formed in the upper and lower surfaces 1. I

of the abutments 11 and extending longitudinally of the cylinders 12. Ineach groove is provided a ball'22 which is free to roll or play from endto end of the groove and'with which the inner surface of the surroundingcylinder 12 may engage. This construction forms an antifriction rollingsup port between each cylinder and the abutments 11 therein, and at thesame time permits the inner ends of the cylinders 12 and the thrustmembers 18 to move up and down slightly. v

26 indicates lugs formed on the opposite sides of the casing 4 anddirectly below the bearing supports 15.

27 indicates curved ribs formed on the inner surface of each of the legs2, 2-, of the pole carrier, and each adapted to normally move freely inthe passageway be tween the adjacent lug 26 and support 15,

but to engage either with said adjacent lug 26 or support 15, forpreventing the trolley pole carrier from getting out of alinement withits pivotal'contact devices, and the disarrangement of cooperatingactive bearing devices in the event of any abnormal jar or strain beingreceived by the trolley stand which would tend to throw said bearingdevices out of proper relative engagement.

28 is a conductor of relatively low resistillustrative and are not anceto electricity, preferably a flexible copper cable, arranged between thepole carrier 2 and the pivot casing l; its purpose is to conduct thecurrent from the pole in shunt around the antifriction bearing in orderto prevent the resultant heat due to an excessive current flowingthrough said bearing elements from drawing the temper of said bearingelements, and to furnish a path of low'resistance between the polecarrier and the casing 4.

29 is a brush interposed between the casing and the stud 3 to conductthe current thereto. I

It will be understood, that as the free end of the trolley pole passesfrom one side to the other of the vertical transverse plane in whichsaid pole stands when substantially vertical, one set of knife edgebearings including corresponding elements on cross pin 17 and on thethrust members 18, moves out of operation and the other set moves intooperation.

The angles of the knife edge bearings on the casing 4: and cross pin 17are preferably such that when either pair of bearings for controllingthe vertical swinging movement of the pole toward the opposite ends ofthe car are in operation, the flat surfaces of the bearing elements willnot engage with each other until the pole has been moved down below ahorizontal position, but when the pole is in mid or vertical positionthe adjoining flat surfaces of the blocks 16 may lie' in engagement withthe adjoining flat surfaces between the edges 17', 17 of the pin 17 Manyalterations in construction, and many widely differing embodiments andapplications of my invention will suggest themselves to those skilled inthe art of making trolley stands, without departing from the scope andspirit thereof. My disclosures and description herein are purelyintended to be'in any sense limiting.

The springs 13 mounted within the cylinders, are preferably of a lengthto prevent buckling between their opposite ends so that, whencompressed, they will not engage with the opposite sides of thecylinders and cause friction between these parts.

What I claim is- 1. The'combination of a support having a verticalbearing, a trolley pole carrier, a contact member carried by the carrierand rockably engaging different portions of said bearing to permitswinging of the carrier thereon in vertical directions on differentaxes, and means engaging said carrier at one side of said contact memberand tending to elevate said pole carrier and maintain said contactmember in engagement with said bearing.

2. The combination of a support having a vertical bearing, a trolleypole carrier, a

pivot member fixed to said'carrier and provided with a plurality ofcontact members arranged to rockably engage with said support to permitsaid carrier to swing vertically, and means engaging said carrier at oneside of said contact member and tending to swing said carrier upwardly.

3. The combination of a support having a vertical bearing, a trolleypole carrier having bifurcations, a pivot member fixedly supported atits opposite ends by said bifurcations and provided with a plurality ofcontact members arranged to rockablyengage with said support betweensaid bifurcations to permit said carrier to swing vertically, and meanstending to swing said carrier upwardly.

4. The combination of supporting means provided with a grooved bearing,a trolley pole carrier having bifurcations at its lower end arrangedupon opposite sides of said bearing, a pivot element fixedly supportedat its opposite ends by said bifurcations and prov ded with a contactmember arranged to fit within and rockably engage said grooved bearingto permit the pole carrier to swing in vertical directions, and meansacting on said carrier for elevating it and maintaining the said contactmember in engagement with said grooved bearing.

5. The combination with a support, a trolley pole carrier and meanstending normally to hold the carrier against the support and in elevatedposition, of anti-friction devices between the said carrier and saidelevating means and through which said elevating means operates upon thecarrier, and antifriction devices between the carrier; and the supportto take the thrust therebetween and permit the carrier to swing invertical directions.

6. The combination of supporting means, a trolley pole carrier, anelevating member, and means for pivotally mountingrthe pole carrier onsaid supporting means comprising a set of contacts carried by the polecarrier, one of said contacts engaging with the supporting means and theother of said contacts engaging with said elevating member.

7. The combination of supporting means,

a trolley pole carrier, an elevating member,

means for operating said member, and means for pivotally mounting thetrolley pole carrier on the supporting means, said mounting meanscomprising contacts between the pole carrier and the supporting meansand separate contacts between the carrier and the elevating member.

8. The combination of a support, a trolley pole carrier, an elevatingmember, and means comprising contact members, one of which rocksrelative to the other, between the carrier and the support, and aseparate contactmember between the carrier and said elevating member,for pivotally mounting the carrier relative to said support.

9. The combination of supporting means, a trolley pole carrier,elevating means for the carrier including knife edge contacts one ofwhich is carried by the pole carrier, and separate knife edge contactsbetween the pole carrier and the supporting means for pivotallysupporting the carrier thereon.

10. The combination of a support having a bearing, a pivot elementengaging said bearing and rockable thereon toward and from its oppositeends, a pole carrier fixed to and movable with said pivot element,whereby it is swingable toward the opposite ends of said support, andmeans tending to swing thecarrier upwardly.

11. The combination of a support, a pole carrier, pivot means having apair of pivot members arranged to engage said support, one of saidmembers forming the pivot for the'carrier when it swings downwardlytoward one end of the support and the other of said members forming thepivot for the carrier when it swings downwardly toward the opposite endof the support, elevating means arranged at one side of said support, v

and contact means carried by the carrier and arranged to engage saidelevating means when the carrier swings toward either end of saidsupport.

12. The combination of a support having a vertical bearing, apolecarrier, pivot means having a pair of pivot members arranged toengage sa1d bearing, one of said members forming the pivot for thecarrier when it swings downwardly toward one end of the support and theother of said members forming the pivot for the carrier when itswingsdownwardly toward the opposite end of the support, contact meanscarried by the carrier and normally arranged in a different verticalplane from said bearing, and elevating means engaging said contact meansand tending to swing the carrier upwardly.

13. The combination of a support, a trolley pole carrier, a pivotelement on said carrier arranged to engage said support and permit thecarrier to swing vertically, an elevating member arranged to engage'saidcarrier above and below said pivot element, and means tending to movesaid elevating member in one direction.

14. The combination of a support, a trolley pole carrier, a pivotelement on said carrier arranged to engage said support to permit thecarrier to swing vertically, an elevating member, a pair of contactdevices on said carrier arranged to engage said elevating member aboveand below the axis of said pivot element when the carrier is in asubstantially vertical position, and means tending to move the elevatingmember in one direction.

15. The combination of a support, a pole vertical position and serve aspivots therefor when the pole carrier is operated toward the oppositeends of the support, an elevating member, upper and lower contactdevices carried by said carrier and arranged to engage the elevatingmember when the carrier is in a vertical position, and means tending tomove the elevating member toward said contact devices, one of said pivotmembers and the contact device remote therefrom being arranged tocooperate when the pole swings toward one end of the support.

16. The combination of a support, a pole carrier, means for pivoting thepole carrier on the support to swing from a substantially verticalposition toward the opposite ends thereof, a spring arrangedhorizontally substantially in the plane of the carrier pivoting means,and an elevating member actuated by said spring in one direction andoperatively engaging said carrier on opposite sides of its pivotingmeans, whereby said elevating member tends to swing the pole carrierupwardly when it is moved toward either end of the support.

17. The combination with a base and a trolley pole carrier, of means forsupporting the said carrier on the base to permit the swinging thereofin vertical directions, a spring, and means interposed between one endof said spring and said carrier, the said means being actuated by thecarrier and operating to compress the spring in one direction away fromthe pivot on which said carrier swings when said carrier is moved fromthe vertical position toward either end of the base.

18. The combination of a support, a pole carrier, pivot devices betweensaid carrier and said support permitting the carrier to swingvertically, an elevating member, a spring for operating said elevatingmember, and spaced devices carried by the carrier, one of said devicesbeing arranged to engage said elevating member and move it in oppositionto said spring when the carrier swings downwardly toward one end of thesupport and the other of said devices beingarranged to engage saidelevating member and move it in opposition to said spring when thecarrier swings downwardly toward the opposite end of said support.

19. The combination of supporting means, a trolley pole carrier, meansfor pivotally mounting said carrier on said supporting means, meansarranged to act in one and the same direction for elevating and buflingthe carrier, and a pair of contact devices carried by said carrier anddisposed upon opposite sides of the pivot for the carrier and engagingwith said elevating and bufling means when the latter is in normalvertical position, one of said devices being disengaged from saidelevating and buffing means when the carrier is inclined to either sideof its normal vertical position.

20. The combination of a support, a trolley pole carrier, means forelevating the carrier including contact devices, one of which is carriedby the pole carrier, operating when the pole carrier is swung downwardlytoward one end of the support, and separate contact devices, one ofwhich is also carried by the pole carrier, operating when the said polecarrier'is swung downwardly toward the opposite end of the support, andpivot devices between the trolley pole carrier and said support.

21. The combination with a support and a trolley pole carrier, of meansfor mounting said carrier on the support to permit swinging thereof invertical directions, a spring, an elevating member interposed betweensaid spring and said pole carrier and arranged to compress said springwhen the carrier moves to either side of the vertical, and meansarranged to engage said elevating member on opposite sides of itslongitudinal axis to move it in opposition to said spring.

22. The combination of a support, elevating means including a movablemember and a springrfor operating said member, a trolley pole carrier,and a plurality of sets of contact elements between said carrier andsaid support and said elevating means for swingably supporting saidcarrier on said support, said elevating means serving to swing thecarrier upwardly when it is moved to either side of the verticalposition, one set of contact elements operating when the pole movestoward one end of the support and the other set of contact elementsoperating when the pole moves toward the opposite end of the support andone element of one set of contact elements being arranged to engage theelevating member on one side of its axis and one element of the otherset of contact elements being arranged to engage the elevatmember on theopposite side of its axis.

23. The combination of a support, a trolley pole carrier havingbifurcations at its lower end, means for supporting said carrier on thesupport permitting it to swing in vertical directions, a compressionspring adapted through its expansion at one end in one and the samedirection to elevate and buff the carrier, and means engaging the springat one end and actuated by said bifurcations for compressing it.

24:. The combination of a support, a trolley pole carrier havingbifurcations at its lower end, means for supporting said carrier on thesupport permitting it to swing in vertical directions, a compressionspring adapted through its expansion at one end in a direction towardthe pivot for the from the pivot for the carrier to elevate and buff thecarrier, and means engaging with the spring at one end and actuated bysaid bifurcations for compressing said spring in a direction awaycarrier.

25. The combination of a support, a trolley pole carrier, a bearingcarried by the support, a movable contact device carried by the polecarrier and engaging with said bearing, and elevating means forthe polecarrier including an elevating member, a contact carried by the polecarrier and arranged to operate the elevating member when the polecarrier is drawn down toward one end of the support and a separatecontact also carried by the pole carrier and arranged to operate theelevating member when the pole carrier is drawn down toward the oppositeend of said support.

26. The combination of a support provided with a bearing member, a polecarrier having bifurcations, a contact element supported at its oppositeends by said bifurcations and engaging said bearing member therebetween,said element being arranged to rock upwardly and downwardly on saidbearing to support the carrier on different axes as it swings to eitherside of a substantially vertical position, and means tending at alltimes to swing said carrier upwardly.

27. The combination of a support provided with a bearing formed with apair of parallel grooves, a pole carrier having bifurcations, a pivotmember supported at its opposite ends by said bifurcations and providedwith a pair of contact members one of which is arranged to fit withinone of the grooves of said bearing and permit the carrier to swingdownwardly toward one end of the support and the other of which membersis arranged to fit within the other roove of said bearing and permit thecar- ;ier to swing downwardly toward the other end of the support, andmeans tending at all times to swing said carrier upwardly.

28. The combination of supporting means, a trolley pole carrier, anelevating member, pivot devices between the trolley pole carrier and thesupportng means, engaging devices between the trolley pole carrier andsaid elevating member, and means for yieldably and swingably supportingthe said elevating member, the yieldable means for said elevating memberbeing swingable therewith.

29. The combination of supporting means, a trolley pole carrier, anelevating member, pivot devices between the pole carrier and thesupporting means, engaging devices between the pole carrier and one endof the said elevating member, means for swingably and slidablysupporting the other end of said elevating member, and compression meanscarried by said elevating member interposed between it and the means forsaidmember.

30. The combination of supporting means, a trolley pole carrier, pivotalconnections between said carrier and the supporting means, and means forelevating the carrier comprising an elevating member having an abutment,means for swingably and slidably supporting one end of said elevatingmember, a stationary abutment and a compres sion spring interposedbetween the stationary abutment and the abutment on said elevatingmember, the opposite end of said elevating member being arranged toengage and move with said carrier and the spring being movable invertical directions with said elevating member.

81. The combination of supporting means, a trolley pole carrier, anelevating member, a compression spring therefor, pivot devices betweenthe pole carrier and the supporting means, engaging devices between thepole carrier and one end of the said elevating member, and means forswingably and slidably supporting the other end of said elevatingmember, the end of the spring which engages said elevating mem ber beingswingable therewith;

32. The combination of a support, a trolley pole carrier pivotallymounted on said support to swing in vertical directions, a separatesupport, an elevatingvmember arranged to be engaged by the carrier, aspring interposed between said elevating member and said separatesupport, and pivotal connections between said elevating member and saidseparate support permitting the elevating member to slide and swingrelative thereto.

38. The combination with supporting means and a trolley pole carrier, ofmeans for pivotally mounting the carrier on said supporting supportingmeans to swing in vertical directions, a spring, an abutment for one endof said spring, and a device having pivotal connection at one end withsaid carrier and swingably mounted at its opposite end on said abutmentand engaging the opposite end of the spring for compressing it.

ea. The combination with supporting means and a trolley pole carrier, ofmeans for pivotally mounting the carrier on said supporting means toswing in vertical directions, a spring, an abutment for one end of saidspring, and; a device having pivotal connection at one end with saidcarrier and swingably mounted at its opposite end on said abutment andengaging the opposite end of the spring for compressing it, the saiddevice cooperating with the abutment to support the springtherebet-ween.

35. The combination of supporting means, a trolley pole carrierpivotally mounted on said supporting means so as to swing in verticaldirections, an elevating member arranged to be engaged by said carrier,

means for supporting said elevating member and permitting it to slidelongitudinally and move in vertical directions, and a spring foroperating said elevating member against the action of said pole carrier,one end of said spring being arranged to engage and move longitudinallyand vertically with the elevating member.

36. The combination of supporting means, a trolley pole carrierpivotally mounted on said supporting means so as to swing in verticaldirections, an elevating member arranged to be engaged by said carrier,means for supporting said elevating member and permitting it to slidelongitudinally and move in vertical directions, the said means includinganti-friction bearings, and means for operating said elevating memberagainst the action of said pole carrier, one end of said operating meansbeing arranged to en gage and move longitudinally and vertically withsaid elevating member.

37. The combination of supporting means, a trolley pole carrierpivotally mounted on said supporting means to swing in verticaldirections, a separate support, an elevating member arranged to beengaged by the carrier, a spring interposed between said elevatingmember and said separate support, and pivotal connections between saidelevat ing member and said separate support per mitting the elevatingmember to slide and swing relative thereto, the said pivotal connectionscomprising a ball mounted in a recess formed in said separate support.

38. The combination with supporting means and a trolley pole carrierpivotally mounted thereon to swing in vertical directions,-of anelevating spring, a member sup porting the spring and arranged tocompress it by the movement of the trolley pole carrier, connectingmeans between one end of said member and the said carrier, and means forswingably and slidably supporting the opposite end 01"? said member.

89. The combination with supporting means and a trolley pole carrierpivotally mounted thereon to swing in vertical directions, of anelevating spring, a cylinder inclosing the spring and arranged tocompress it by the movement of the trolley pole carrier, connectingmeans between one end of the cylinder and the said carrier, andantifriction devices for supporting the opposite end of the saidcylinder.

40. The combination of supporting means, a trolley pole carrier, anelevating member including a casing, pivot devices between the trolleypole carrier and the supporting means, engaging devices between thetrolley pole carrier and the elevating member, a compression springmounted in the casing or" the elevating member, and means for swingablyand slidably supporting the said elevating member and casing.

ll. The combination of supporting means, a trolley pole carrier, anelevating member including a casing, means for pivoting the pole carrieron said supporting means, engaging devices between the trolley polecarrier and the elevating member, an abutment, a compression springmounted within said casing and engaging said abutment, and means forswingably and slidably supporting the said elevating member and casing.

42. The combinationof supporting means, a trolley pole carrier, anelevating member including a casing, means for pivoting the pole carrieron said supporting'means, engaging devices between the trolley polecarrier and the elevating member, an abutment, a compression springmounted within said casing and engaging said abutment, and means forswingably and slidably supporting the said elevating member and easingat one end.

43. The combination with a trolley pole carrier and supporting meanstherefor, of a strut rod carried by said supporting means and providedwith an abutment, pivotal means between said carrier and said supportingmeans, a device, comprising an elevating member and a casing, arrangedto be operated by the pole carrier, the rear end of said casing beingswingably and slidably supported by said abutment, and a compressionspring mounted in said casing and having engagement at one end with saidabutment and at its opposite end with said device.

44. The combination of a support, a trolley pole carrier, pivotconnections between the support and said carrier permitting the latterto swing vertically, elevating means having pivotal engagement with thecarrier and acting thereon to swing the carrier upwardly, and means forpreventing displacement of the carrier as it swings on said pivotconnections.

4:5. The combination of a support, a trolley pole carrier, pivotconnections between the support and said carrier permitting the latterto swing vertically, elevating means having pivotal engagement with thecarrier and acting thereon to swing the carrier upwardly, andcooperating devices carried by the support and carrier for preventingdisplacement oi the carrier as it swings on said pivot connections.

46. The combination of a support, a trolley pole carrier, pivotconnections between the support and said carrier permitting the latterto swing vertically, elevating means having pivotal engagement with thecarrier and acting thereon to swing the carrier upwardly, a membercarried by said support and formed with a groove, and a curved membercarried by said carrier and movable endwise in the groove of said memberfor preventing displacement of the carrier as it swings on said pivotconnections.

&7. The combination of a support, a pole carrier having legs, pivotdevices between said support and said carrier permitting the latter toswing vertically, elevating means having pivotal engagement with saidcarrier and acting thereon to swing the car rier upwardly, and setsofcooperating devices, one device of each set being mounted on saidsupport and the other device of the set being mounted on the adjacentcarrier leg, for preventing displacement of the carrier as it swings onsaid pivot devices.

48. In a trolley stand, the combination of a support, a trolley polecarrier having legs arranged on opposite sides of said sup port, acontact clement supported at its opposite ends by said legs andtulcrumed on said support therebetween, and a pair of elements carriedby one of the legs and said support and cooperating to preventdisplacement of the contact element relative to said support.

49. The combination of a support, a pole carrier having legs, pivotdevices'between said support and said carrier permitting the latter toswing vertically, thrust means having pivotal engagement with saidcarrier and acting thereon to swing the carrier upwardly, one of saidpivot devices being supported at its opposite ends by said legs andengaging the other of said devices therebetween, and sets of cooperatingdevices, one device of each set being mounted on said support and theother device of the set being mounted on the adjacent carrier leg, forpreventing displacement of the carrier as it swings on said pivotdevices.

50. The combination of a support, a pole carrier, pivot devices betweenthe carrier and the support permitting said carrier to swing in verticaldirections toward either side of said support, the pivot device carriedby the carrier having rocking engagement with the support on difi'erentaxes when the carrier moves toward opposite ends of said support, meanstending to swing the pole carrier upwardly, and cooperating devicesbetween the carrier and said support for preventing displacement of thecarrier as it swings vertically, the said cooperating devices beingconstructed to permit the rocking of the pivot device carried by saidcarr1er.

51. The combination of supporting means, a trolley pole carrier, anelevating member, and means, comprising contacts between the carrier andthe supporting means and separate contacts between the carrier and thesaid elevating member, for pivotally mounting the carrier relative to tsupporting means, and means for preventing the con tacts from gettingout of proper alinement.

52. The combination of a base, a casing rotatably mounted upon said baseby anti-friction bearings and swingable in horizontal directions, and apole carrier supported upon upon said casing by knife edge contactdevices and swingable relative to said casing in vertical directions.

58. The combination with a support, a trolley pole carrier andnieansitending normally to hold the carrier against the support and inelevated position,-of anti-friction devices between the carrier and thesupport to take the thrust therebetween and permit the carrier to swingin vertical directions, anti-friction devices through whichsaidelevating means operates to maintain the anti-friction devices betweenthe sup port and carrier in contact with each other, and anti-frictiondevices between the carrier and support and about the aXis of which thecarrier may swing in horizontal directions.

54. The combination of a base, a trolley pole carrier, supporting meansfor the trolley pole carrier rotatably mounted on the base, knife edgecontact devices between the trolley pole carrier and the said supportingmeans, an elevating member, knife edge contact devices between theelevating member and the trolley pole carrier, and means for operatingthe said elevating member.

55. The combination of rotatably mounted supporting means, a trolleypole carrier provided with depending legs, a strut rod carried by thesupporting means and arranged between the legs of the trolley pole, a.pivotal supporting element for the trollcy pole'carried by the said legsand engaging said supporting means, and means arranged on opposite sidesof the said strut rod for elevating the said trolley pole.

56. The combination of a rotatablymount ed supporting :means, a strutrod carried thereby, abutments carried by the strut rod and arranged onopposite sides thereof, a trolley lpole carrier provided withbifurcations straddling the said strut rod, a pivotal supporting elementfor the-trolley pole 7 carrier supported at its opposite ends by saidbifurcations and engaging said supporting means, and a compressionspring between each of said abutments and the adjacent bifurcation.

Intestimony whereof I Eli'llX my signature, in the presence of twowitnesses.

A. M. MCCARTY.

Copies of this patent may be'obtained for five cents each, by addressingthe Commissioner of Patents, 'Washington, 1). C.

